Buttonhole-sewing attachment for sewing-machines.



TATBNTBD'AUG. 4, 1908'.

Q.T. oNGLBY. Y BUTTONHOLT: SEWING ATTACHMENT TOR SEWING MAGHINES..

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BUTToNHoL-E SEWING ATTACHMENT PoR SEWING-MACHINES;

@vih/leones 110.8959717 PATENTBD-AUG.4,1908.

c. E. oNGLY. BUTToNHoLT: SEWING ATTACHMENT Toa SEWING MT-.GHINES-APPLIOATIOH FILED HAB. 10, 15'00- A A 3 SHEETS-SHEET 3.

CHARLES E. OXGLEY, OF NEW YORK, N. Y..

Specicationol Letters Patent.

PatentedAug. 4, 1908.

Application led March 10, 1906. Serial No. 305,296.

To all 'whom 'it V'may concern.

Be it known that I. CHARLES E. ONGLEY,

'a citizen of the United States, and resident of the borough ofManhattan, in the county of New York and State of X ew York, haveinvented certain new and useful Improvements in Buttonhole-SewingAttachments for Sewing-.\Iacl1ines, of which the following is aspecification.

This invention relates to a button hole sewing attachment for sewingmachines. Its organization comprises means that can be easily attachedto a sewing machine, and with which the stitches for a button hole canbe readily sewed.

It comprises essentially a clamping device for holding the oods to besewed, and means for moving sai device in an ap roximately ovalpath,under the point of t e needle of the sewing machine to which it isattached.

In the accompanying drawings, Figure 1 represents a plan view of theinvention, Fig. 2 shows a front elevation of Fig. 1, with a fragmentaryportion of a sewing 4machine partly in section, Fig. 3 is a section ofFig. 1 on the line 3, 3, Fig.` 4 shows a partial section of Fig. 1 .onthe line 4, 4, F i0. 5 represents a partial section of Fig. 1 on t eline 5, 5, Fig. 6 shows an end view of Fig. 1 looking in the directionof the arrow 6, Fig. 7 represents a plan view of the bed plate of theinvention, with some of its appurtenances.

The invention is represented to comprise a bed plate or frame 20, whichis secured to the frame 21 of a sewing machine with the screws 22. Onthe bed plate '20 are fastened guides 23 with the screws 24, that guidethe main sliding plate 25, from `which latter extends the lug 26, .thatcarries the pin 27 for the link 28. Arms 29 extend from the mainslidinor )late 25, on the ends of which are formed bosses 30, whichlatter have o .enings for the longitudinal guide bars 31. lhe said guidebars havel each a collar 32 at one end, and a nut 33 at the other end Iohold them in place in the bosses 30. Cross hars 34 have formed therewiththe'lugs 35. and are secured into the lugs 36, the lugs 35 and 36 beingsupported on the longitudinal guide bars 31. A secondary sliding plate41u has extendirng therefrom lugsl 41 that are su portedon the crossbars 34. The plate 41D as the knee 42, to

which is iastened the lower plate 43 of a clamping device for thematerlal to be operated upon, by means of the screws 44, the holes inthe knee 42, being elongated to adjustably secure the plate 43. From theplate 43 extend pillow blocks45, that have the journal in 46, whichcarries the and the atter has secured thereto t 1e up )er plate 48of thesaid clamping device. he plate 48 has an opening v49, and has securedthereto a s ring 50 with the screws 51. A clamping b ock 52 is pivotedfrom rongs 53, extending from the spring 50. rom the late 47 extend theillow blocks 54, in which Fatter is journaled t e lever 55, by means ofU'rfEDsarTns Pgurnsr oFFICE. y

late 47,-

the pin 56. The lever 55 has the o enings 57 A journal bracket 63 1ssecured to the sideAV of the bed plate 2() with the screws 64. The saidbracket supports a lstationary shaft 65, with a collar 66 at one end,and a nut 67 at the other end. A bell crank 68 with the arms 69 and 70is .journal-led on the shaft 65. The arm 69 has the forked end 71, thatis supported on a screw 72, extending from a co lar 73, which latter issecured to the needle bar 74 of the sewing machine. The arm is pinned toa pawl 75, with the hook end 76 that engages withthe teeth-77 of aratchet wheel that is formed with or extends from the spur gear 78, andreferabl has eight teeth. The said gear is Journale on a. journal pin 79screwed lnto the bed late 20.A A pinion 80 generally one fourth o thediameter of the gear 7 8, mesheswith the latter, and is formed with asleeve 81 that is journaled on a pin 82, which latter is fastened to thebed plate 20. A screw 83 with head 84 is secured into the pin 82, andholds the sleeve 81 from vertical displacement. The upper end of theslccr'e 81 1s formed with a guide 85 that carries a nut 86, into whichis screwed a journal pin 87 for the link 28. A lug 88 extends from thebed plate 20, and it has an opening 89, which forms a bearing for aswinging adjusting bar 90, that bears against the outer face of theguide 85. A post 91 extends from the bed plate 20, and a.

of which is formed the gear 96, that meshes` with the internal oval gear97. The latter is formed of an oval ring that is located en vthe topface of the secondary )late 40. From the' said gear 96 extends a oss orroller 98, which beais against an oval projection 99,

, extending from the cover plate 100, which latter with the ovalinternal gear 97 is fastened in place to the )late 40 witt the sci'ews101. The lower enti of the spindle 95 has 'secured thereto the wormwheel 102, that meshes with the worm 103 of the worin shaft 104. Thesaid worm shaft is supported in journal bearings 105 and 106, thatextend from themain sliding plate 25. /A collar 107 on the worm shaftbears against the bearing 105, and a. sleeve 127 is carried on the otherend of the said worin shaft. To the sleeve 127 is pinned a -pawl 108,that engages with a. ratchet wheel 109,A a nut 110 holding said ratchetwheel `in place.` `A pin 111 extends from the sleeve 127, and isstraddled by a forked end 112, of a lever 113, that is journaled to aboss 114 ext/ending from the bed plate 20. The bed plate 20 has asuitable o ening 115, for the operation of the worin s aft 104 with itsappurtenances. The lever 113 has a knee 116 which is lscrewed to thefeed arm 11T of the feed mechanism of the sewing machine. The throatplate 118 of the sewing machine has a suitable opening f 119. for theknee 116, and an opening 120 for the needle 121.

To operate the invention a piece of materia-l 122 to'be operated upon,is placed over an opening in the plate 43, the plate 48 having eenraised by means of the lever 55. The clamping block 52 bearing on saidmaterial, holds itV securely in lace. The sewing machine is then startetand the needle bar 74. reciprocating actuates the arm 69 of the bellcrankl 68, and the arm 70 of said bell crank reciprocates the pawl 75.The latter engages with the teeth 77 of the ratchet wheel, by means ofwhich the spur gear 78 is interiiiittentliirotated. The gear 78 drivesthe pinion 80. and consequently the pin 87, the axial line of whichlatter is out of line with the axis of the iinion. The pin 87 isintermittently rotated around the axis of the pinion 80. The distancebetween the axis of the pin 87, and axis of the said pinion beingadjustable, by clamping the nut 86 in differ ent positions. The swingingadjusting bar 490, bearing against the face ot' the guide 85,

secures equal amounts of rotation for the pinion 80, each time itis'actuated by the spur gear 78. If the bar 90 is omitted the amount ofrotation given to the pinion 80 by the spur gear 7S may not always bethe saine, on account of diferences of friction between the part-sconneccd with said elements, and also on account cf the variable amountsof friction between said elements. The amount of rotation imparted tothe said pinion may also vary on account of the back lash between saidpinion and said spur gear. -The swinging at justiiig liar 90 bearingagainst.

the outer face of the guide forces the pinion 80 to be rotated equalamounts when actuated by the spur gear 78, because should the face ofthe guide 85 be moved to an angular position with respect to the bar 90,the latter bearing against the same will turn it vso that said facebears against said bar. The equa-l amounts of rotation given to the saidpinion is necessary to obtain equal lengths of stitches during theoperation of the. machine, and thereby controlling the uniformity of thelengths of the stitches.

By the rotation of the pin 87, the pin 27 is reciprocated, b v virtue ofwhich the main sliding plate 25 is also reciprocated to an amount Vequalto the length of each stitch sewed for the` button hole. During thereciprocation of the main sliding plate 25, the clamping block 52' withthe material to be operated upon, iscari'ied approximately in the pathof an oval. The feed arm 117 swingst-he knee end 116 of the lever 113,and by virtue thereof the forked end 11'2 of the lever 113 swings thepin 111 and the sleeve 127. The latter carrying the pawl 10S, whichengaging with the ratchet wheel 109, intermittently rotates the latter,and therebv the worin shaft 104'. The said worin sha intermittentlyrotates the worm wheel 102, and hence the gear 96. The latter meshingwith t-he oval internal gear 97 carries the latter by means ol its forniin an oval path, and with it t-he secondary plate 40 and itsappurtenances, that comprise the clamping device, and the materialoperated upon. The guide bar's 31 and 34 allow the oval gear to move ina line parallel to the longitudinal axis of the. machine, and in alldirections making angles therewith. The combined movements of the' ovalgear and the intermittent rotations of the pinion 80,'bring the materialin pro er positions for the needle 1'21, to sew the stitches of thebutton hole.

Having described niv invention, I claim:

l. in a button hole sewing attachment for a sewing machine thecombination of a frame, a main sliding plate thereon, a secondarysliding plate on the main sliding plate, connections between the needlebar of the sewing machine and the main sliding plate, con nectionsbetween the feed mechanism of the sewing machine. and the secondarysliding plate, and a clamping device to hold a ruaterial secured to asecondary sliding plate.

` '2. `In a button hole sewing attachment for sliding plate, means' toreciprocate the said plate, means to vary the length of said r-eciprocations, guide bars parallel to the di rections of saidreciprocations supported en the sliding plate, a secondary sllcing plateF over the main sliding plate, cross bars supported on the said guidebars and atright i angles thereto, means to move the secondary plate onthe cross-bars, and a clamping device to .hold a material adj ust'ablysecured to the secondary plate.

for sewing machines the combination of a bed plate, a main sliding plateon the bed plate, a link pinned to said main plate, a spur gearjournaled on the bed plate, means to intermittently rotate the gear, apini-en meshing with the spur gear, a guide extending from the saidpinion,- a nut carried in the guide, a4 journal pin screwed into the nutto clamp the latter in various positions in the guide, one end of saidlink engaged by the journal pin, a swinging adjusting bar fulcrumed on alug extending-fromthe, bed plate, the free end thereof bearing againstthe said guide, a post extending from the bed plate, aspring extendingbetween the post and the said adjusting bar, a secondary plate carriedon the main sliding plate, means to reciprocate the secondary plate indirections parallel to the direction of the movement-s of the main plateand at right angles thereto, and a clamping device secured to thesecondary plate.

4. In a button hole sewing attachment for sewing machines thecombination of a bed plate,`a main sliding lplate on the bed plate,means to reciprocate the main sliding plate. means to vary the lengthsof said reciprocations, guide bars carried on the said main slidingplate, cross bars supported on the guide l bars, a secondary slidingplate 'supported on the cross bars, a worm shaft journaled below themain' sliding plate, a spindle supported on and journaled through themain sliding plate, a worm wheel secured to the lowerend of the spindlemeshing with the Worm shaft, a spur gear extending from the upper end ofthe spindle, an oval internal gear carriedon the secondary slidingplate, and meshing with the said spur gear, means to maintain the spurgear and internal gear in mesh, means to turn the worm shaft, andtherebyT more the internal gear in an oval path, and a clamping devicesecured to the secondary sliding plate.

5; In a button hole sewing attachment for sewing machines thecombination oi a.

bed plate, a main sliding plate 011 the bed plate, means to reciprocatethe main sliding plate, means to vary the lengths of seidreciprocations, guide bars carried on the said main sliding plate, crossbars supported the main s iding plate, a worm wheel secured to t-helower end et' the spindlemeshing with the worm shaft. a spur gearextending from the upper end of spindle, an oval internal gear carriedon the secondary sliding plate,

i and meshing with the said spur gear, a boss extending from the upperface of the spur gear, a cover plate cn the said internal gear, 3. In abut-ton hole sewing attachment i sliding plate, crrss bars sup-,portedon the guide bars, a secendary sliding plate supported on the crossliars, a wenn shaft journaled below the main sliding late, a s mdlesupportedl on and journal throug the. main slidlng platea worm Wheelsecured to the lower-"end or' the spindle and meshing with the worlns'aaft, a spur gear extending from thepper eind of the' spindle, an ovainternal gea "carried on the secondary sliding pla-te, and 1n with the`mid s )ur gear. means to main e. Ihe spur gear and internal gear inmesh, ye carried on the worm sha-ft, a'pawl secu? d'to the sleeve, aratchet wheel -fastened t@ thewvorrni shaftand engaged by the paml.apinextending from the sleeve, a lever t'urcrnmed to the bed plate ofthc said attachment, atoried end formed with the said lever straddling'the said in, the other end of the lever secured to the eed mechanism ofn sewing machine, and a clamping devicesecured to the said secondaryplate. l. v

7. In a button isole sewing attachmept the. combination of a ined platesecured to asewing machine, a sliding plate guided\on the bed plate, a.spur gear jenrnaled on the bed plate, a ratciriet wheel extending fromthe gear, a journal bracket extending up from the bed late, a. straftsuported in the jonrnal brac et, s. bill cran pinmaled on the shaft, onearm osad bell crank connected to the needle bar @E time sewing machine,a pawl pinned to the otherann of the bell crank and engaging with theratchet Wheel to intermittently rotate the Latter, a pintien journaledon the b'ed plate :and meshing with the spur gear, connections betweenthe main sliding plate and pinion ma reciprocate the said main slidingplate, a semindary sliding plate on the sewing machines the combinationof a main l on the guide bars .a secondary sliding plate Y supported vonthe cross bals, a worm shaft journaled below the main sliding plate,- a.l spindle su ported en and journaled through ism of the sewingmachnetolnove the latter f A. D.'1{j.

y, mg machlne, and a clam mg device to hold g secured to the saisecondary sliding plate.

main sldn@r late, means between the said of New York in the county ofNew York and secondary sic ing plate and the feed mechany State 0E SewYork in au oval path under the needle of the sewl CHARLES E OGLEY I amaterial to be o erate upon, adjustably A'tnesses:

W. H- BoWIE, v

Signed at the borough of Manhattan, city )L H. COOK.

, this 8th day of Marchlpl

